Bending collapse of dual rectangle thin-walled tubes for conceptual design

Bai, Jiantao; Meng, Guangwei; Wu, Hong; Zuo, Wenjie

doi:10.1016/j.tws.2018.11.014

Cited by 42 publications

(17 citation statements)

References 80 publications

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“…In this section, the folding mechanisms 32,33,50 of thin-walled structures are used to derive bending collapse characteristics of the TRTWT. The following assumptions are given as…”

Section: Analytical Derivationmentioning

confidence: 99%

“…The true stress-strain curve is only used in LS-DYNA software with the *DEFINE_CURVE keyword. Figure 8 shows the engineering and true stress-strain curves, 50 in which the engineering stress is softening at the end and the true stress is always hardening. The true stress σ T and strain ε T are calculated according to the engineering stress and strain the engineering stress σ E and strain ε E obtained from the experiment, that is,…”

Section: Analytical Derivationmentioning

confidence: 99%

“…The half-cylinder with the mass of 900 kg impacts upon the front-end structure with the speed of 12 m/s, which is obtained from the occupant protection regulations of the pole front impact. 50 The six DOFs of front beam-end are constrained and the crash time is set to 16 ms. The material of the front-end structure is identical with that of the side-wall structure.…”

Section: Application Examplesmentioning

confidence: 99%

“…More recently, Huang and Zhang 49 detailedly investigated the three-point bending collapse of rectangular tubes via experimental, numerical and theoretical methods, but their analytical results were not applied in engineering structures. Furthermore, Bai et al 50 investigated the three-point bending characteristics of dual rectangular thin-walled tubes (DRTWTs) according to Kim and Reid’s model. The accuracies of analytical expressions were validated by the experimental results.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, an accurate simplified model of the automobile structure was created by complex thin-walled beams with the numerical crushing, bending and torsional collapse characteristics. 58 In addition, Bai et al 50,59 utilized the rectangular tubes and DRTWTs with the analytical bending collapse characteristics to create simplified models and enhance their crashworthiness. The above crashworthiness results of the simplified model agreed with the detailed model.…”

Section: Introductionmentioning

confidence: 99%

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Bending collapse of treble rectangular thin-walled tubes and its application in conceptual design for automobile crashworthiness

Tian²,

Bai

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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The aluminium profiles of treble rectangular thin-walled tubes (TRTWT) manufactured by extrusion processes are extensively applied in energy absorption structures of automobile due to the high crashworthiness and stiffness-to-mass ratio. Therefore, this paper investigates the bending collapse characteristics of the TRTWT and its application in conceptual design for automobile crashworthiness. Firstly, the bending collapse behaviours of the TRTWT are obtained through experimental method. Then, the analytical expressions for the bending collapse characteristics are derived in detail by using the global energy equilibrium theory, which are validated by comparing with experimental and numerical results. Furthermore, the bending collapse characteristics are applied in the simplified model to conduct crashworthiness analysis and optimization for the conceptual design of the automobile with the TRTWT, which can enhance the crashworthiness and greatly shorten design cycle. Finally, application examples for the front-end and side-wall structures of automobile demonstrate that the simplified model with the analytical bending collapse characteristics can be used as a substitute of detailed model for accelerating crashworthiness design of the automobile with the TRTWT.

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“…In this section, the folding mechanisms 32,33,50 of thin-walled structures are used to derive bending collapse characteristics of the TRTWT. The following assumptions are given as…”

Section: Analytical Derivationmentioning

confidence: 99%

Section: Analytical Derivationmentioning

confidence: 99%

Section: Application Examplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Bending collapse of treble rectangular thin-walled tubes and its application in conceptual design for automobile crashworthiness

Tian²,

Bai

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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On the Use of Carbon Fiber Composites for the Enhancement of the Rollover Resistance of Steel Buses

Lavayen-Farfán

Butenegro

Boada

et al. 2023

Proceedings of the XV Ibero-American Congress of Mechanical Engineering

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The increasing use of composites in vehicles in recent years is one of the current trends in the automotive industry. In particular, fiber composites are being used as reinforcements for the main structural elements of vehicles, due to their outstanding specific mechanical properties and low weight. When combined with metal parts, fiber composites can significantly enhance the crashworthiness of vehicle structures, by increasing their energy absorption capabilities and resistance to plastic deformations and permanent damage. This work presents CFRP reinforcements as a case study for enhancing the bending collapse behavior and crashworthiness of bus structures. The required calculations are based on a simplified “concept model” that includes the bending collapse behavior of the structural components, based on theoretical models calibrated with experimental results. The results demonstrate that the use of CFRP reinforcements improves the rollover crashworthiness of a bus structure, and need not be applied to the entire structure, but only to the critical parts where bending collapse is most likely to occur in a rollover accident.

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Comparison of Energy Absorption Characteristics of the Plain Fold and Spot-Welded Fold Tubes Under Three-Point Bending

Mohamed¹,

Sivaprasad²

2020

Lecture Notes in Mechanical Engineering

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Bending collapse of dual rectangle thin-walled tubes for conceptual design

Cited by 42 publications

References 80 publications

Bending collapse of treble rectangular thin-walled tubes and its application in conceptual design for automobile crashworthiness

Bending collapse of treble rectangular thin-walled tubes and its application in conceptual design for automobile crashworthiness

On the Use of Carbon Fiber Composites for the Enhancement of the Rollover Resistance of Steel Buses

Comparison of Energy Absorption Characteristics of the Plain Fold and Spot-Welded Fold Tubes Under Three-Point Bending

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